/// <summary>
/// 获取指定工作流、角色、时间段的实例集合
/// </summary>
/// <param name="workflowName">流程名称</param>
/// <param name="userIdentity">用户身份</param>
/// <param name="role">审批角色</param>
/// <param name="startDate">时间段起始时间</param>
/// <param name="endDate">时间段截止时间</param>
/// <returns></returns>
public InstanceCollection Distill(string workflowName, IUserIdentity userIdentity, ApprovalRole role, DateTime startDate, DateTime endDate)
{
//提取实例集合的过程，先遍历每一个提取者对象进行实例提取，后遍历每个过滤器进行实例过滤，最后返回剩余的实例的集合
InstanceCollection instances = new InstanceCollection();
StateMachineWorkflow workflow = (StateMachineWorkflow)WorkflowRuntime.Current.GetService <IWorkFlowDefinePersistService>().GetWorkflowDefine(workflowName);
foreach (InstanceDistiller distiller in InstanceDistillers)
{
instances.AddRange(distiller.InternalDistill(workflowName, userIdentity, role, startDate, endDate));
}
if (Filters != null)
{
foreach (InstanceFilter filter in Filters)
{
if (filter is IInstanceCollectionFilter)
{
IInstanceCollectionFilter collFilter = (IInstanceCollectionFilter)filter;
collFilter.Filter(instances, role, userIdentity);
}
else
{
for (int i = instances.Count - 1; i >= 0; i--)
{
if (filter.InternalIsMatch(instances[i].Instance, role, userIdentity))
{
instances.RemoveAt(i);
}
}
}
}
}
return(instances);
}
/// <summary>
/// 获取某用户对某流程的角色-实例集合字典
/// </summary>
/// <param name="workflowName">流程名称</param>
/// <param name="userId">用户Id</param>
/// <param name="startDate">其实时间</param>
/// <param name="endDate">终止时间</param>
/// <returns></returns>
private InstanceCollection DistillInstances(string workflowName, string userId, DateTime startDate, DateTime endDate)
{
List <ApprovalRole> roles = WorkflowUtility.GetUserRoles(workflowName, userId);
IUserIdentity userIdentity = identityService.GetUserIdentity(userId);
InstanceCollection rtn = new InstanceCollection();
//对本流程中每一个角色遍历得到实例集合后合并入角色-实例集合字典
foreach (ApprovalRole role in roles)
{
rtn.AddRange(DistillInstances(workflowName, userId, role.Name, startDate, endDate));
}
return(rtn);
}
/// <summary>
/// 获取某用户对某流程的任务列表
/// </summary>
/// <param name="userId">用户Id</param>
/// <param name="startDate">其实时间</param>
/// <param name="endDate">终止时间</param>
/// <returns></returns>
public InstanceCollection DistillInstances(string userId, DateTime startDate, DateTime endDate)
{
InstanceCollection instances = new InstanceCollection();
foreach (string workflowName in this.workflowNames)
{
//对每一个流程中每一个角色遍历得到实例集合后合并入角色-实例集合字典
List <ApprovalRole> roles = WorkflowUtility.GetUserRoles(workflowName, userId);
foreach (ApprovalRole role in roles)
{
instances.AddRange(DistillInstances(workflowName, userId, role.Name, startDate, endDate));
}
}
return(instances);
}
/// <summary>
/// 获取角色和对应实例集合的键-值对
/// </summary>
/// <param name="workflowName">流程名称</param>
/// <param name="userId">用户Id</param>
/// <param name="roleName">角色名称</param>
/// <param name="startDate">时间段起始时间</param>
/// <param name="endDate">时间段截止时间</param>
/// <returns></returns>
private InstanceCollection DistillInstances(string workflowName, string userId, string roleName, DateTime startDate, DateTime endDate)
{
IUserIdentity userIdentity = identityService.GetUserIdentity(userId);
//获取流程对应的审批角色对象，并从角色-提取者字典中获取角色对应的提取者
InstanceCollection instances = new InstanceCollection();
ApprovalRole role = WorkflowUtility.GetUserRoleByName(workflowName, roleName);
if (role != null)
{
//用户不在该角色
if (!userInRole.IsUserInRole(userIdentity.GetUserId(), role.Name))
{
throw new ApplicationException(string.Format("{0} is not in role {1}", userIdentity.GetUserId(), role.Name));
}
//取得角色的任务提取器
TaskDistiller distiller = GetRoleDistiller(roleName);
instances.AddRange(distiller.Distill(workflowName, userIdentity, role, startDate, endDate));
}
return(instances);
}
